|Publication number||WO2007033309 A2|
|Publication date||22 Mar 2007|
|Filing date||13 Sep 2006|
|Priority date||13 Sep 2005|
|Also published as||US20070062506, WO2007033309A3|
|Publication number||PCT/2006/35795, PCT/US/2006/035795, PCT/US/2006/35795, PCT/US/6/035795, PCT/US/6/35795, PCT/US2006/035795, PCT/US2006/35795, PCT/US2006035795, PCT/US200635795, PCT/US6/035795, PCT/US6/35795, PCT/US6035795, PCT/US635795, WO 2007/033309 A2, WO 2007033309 A2, WO 2007033309A2, WO-A2-2007033309, WO2007/033309A2, WO2007033309 A2, WO2007033309A2|
|Applicant||National Paintball Supply, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Referenced by (13), Classifications (5), Legal Events (3)|
|External Links: Patentscope, Espacenet|
 CLUTCH AND DETECTION MEANS FOR
PAINTBALL MARKER LOADER
 FIELD OF INVENTION
 This invention relates to the sport of paintball and equipment for playing paintball games. Specifically, it is a device for use with a paintball loader that rotates a feeder, allows the feeder to operate despite a paintball jam and significantly reduces the likelihood that the feeder, loader or paintballs will be damaged if paintballs jam.
 . BACKGROUND
 Paintball is played on a field by two teams. The object of most games is to "capture" the opposing team's flag before they capture yours. Each player is armed with a paintball marker, which is generally, a gun that shoots spherical gelatin capsules filled with a non-toxic paint, called "paintballs" under the force of compressed gas. If a player is hit with a paintball fired by a marker of a player on the opposing team he or she is eliminated from the game.  Paintball loaders sit atop the markers and feed paintballs into the marker. They are comprised of a hopper (the terms "hopper" and "loader" are used interchangeably herein) which stores paintballs, and has an outlet or exit tube. The outlet tube is connected to an inlet tube of a paintball marker, which is in communication with the breech of the paintball marker. Many hoppers also contain an agitator or drive system, which is usually performed by an impeller, projection, drive cone, agitator, paddle, arm, fin, carrier, or any other mechanism, such as those shown and described in U.S. Patent Nos.5,954,042, 6,213,110, and 6,792,933, all incorporated by reference as if fully set forth herein. In a gravity feed type hopper, the agitator mixes paintballs so that no jams occur at the exit tube. In a force feed drive system hopper, the agitator forces paintballs through the exit tube. Because it is desirable to eliminate as many opposing players as possible, paintball markers are capable of rapid fire. To accommodate this, paintball hoppers hold a large amount of paintballs and the agitators are capable of feeding these paintballs to the marker rapidly.
 While this allows for rapid fire, it also increases the likelihood that paintballs will jam in the outlet and/or inlet tubes and thereby "back-up" into hopper. In the loaders currently known in the art, the feeder or agitator continues to rotate despite the jam. Thus, the impellers of the feeder or agitator continue to try to drive paintballs through the jammed tubes. This often stops the feeding of paintballs, damages the paintballs and sometimes renders the feeder or loader inoperable. Thus, there is a need for a drive system for a paintball loader that controls the rotation of a feeder or agitator when paintballs jam, and shuts off the motor driving the agitator. There is also a need for a device frees up the jam and begins rotating immediately once the jam is cleared so that a player may resume play quickly. The present invention satisfies these needs.
 The present invention is a drive system for a paintball loader comprising a motor driven shaft rotatable about a central axis, a drive mechanism attached to the drive shaft, a feed mechanism carrier adjacent the drive mechanism and rotatable about the drive shaft, wherein the drive shaft and the feed mechanism are engaged through a slip clutch.
 The present invention is a drive system for a paintball loader comprising a stepper motor driven shaft rotatable about a central axis, a drive mechanism attached to the drive shaft, a feed mechanism carrier adjacent the drive mechanism and rotatable about the drive shaft, wherein the drive shaft and the feed mechanism are engaged through a slip clutch.
 In every embodiment disclosed below, the present invention is easily
"retrofitted" so that it can be used with all existing styles of paintball loaders, including, but not limited to "force feed", "active feed", and "agitating" loaders.
 BRIEF DESCRIPTION OF THE DRAWINGS  Figure 1 is an elevation view of a loader attached to a paintball marker.
 Figure 2 is a bottom isometric view of a paintball feed mechanism according to the present invention.
 Figure 3 is a top isometric view of a paintball feed mechanism according to the present invention.
 Figure 4 is a bottom isometric view of a paintball feed mechanism according to the present invention.
 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  As used herein, the term "paintball feeder", "feed mechanism",
"feeder", or "paintball impeller" refers to any apparatus that impels paintballs from a hopper into a gas gun breech.
 FIG. 1 is a side elevational view of a rapid feed paintball loader 40 operatively attached to a representative paintball gun 20 illustrated in phantom. The paintball gun 20 includes a main body 22, a compressed gas cylinder 24, a front handgrip 26, a barrel 28, and a rear handgrip 30. The paintball gun also includes an inlet tube 32 leading to a firing chamber (not shown) in the interior of the main body and a trigger 34. The front handgrip projects downwardly from the barrel and provides an area for gripping by an operator of the paintball gun. The compressed gas cylinder is typically secured to a rear portion of the paintball gun. The compressed gas cylinder normally contains carbon dioxide, although any compressible gas may be used.
 In operating the paintball gun 20, the trigger 34 is squeezed, thereby actuating the compressed gas cylinder to release bursts of compressed gas. The bursts of gas are used to eject paintballs 53 outwardly through the barrel 28. The paintballs are continually fed by the paintball loader 40 through its outlet tube 52 to the inlet tube 32, and then to the firing chamber. The actual feed is done by gravity, but jams in the outlet tube 52 are discouraged by a motorized feed assembly 140 located within the loader 40, which is shown in more detail in FIGS. 2 and 3.  The feed assembly comprises several embodiments, the first of which comprises a drive cone 100, clutch plate 108, drive shaft 300, and motor
400. The drive cone 100 rotates about axis 204 and has fins 104 hold and drive the paintballs 53 towards the outlet tube 52 to prevent jamming and facilitate loading.
 The motor 400 drives the drive shaft 108, which in turn drives the clutch plate 200. The clutch plate 200 engages and drives a clutch engaging surface 106 on the bottom of the drive cone 100. During a situation where the ball jams, rather than the motor 400 continuing to drive the fins 104 and crush the paintball 53, the clutch plate 200 slips against the drive cone's engaging surface 106 when the engaging surface 106 exerts a predetermined amount of resistance to the rotational force applied by the clutch plate (this resistance could be modified by the user or a predetermined setting from the factory).
 When this slippage occurs, sensors 109 and/or 209 in the drive cone
100 and clutch plate 200 respectively, detect the slippage and relay a signal to a controller 500. The controller, on receipt of the signal, sends a disabling signal to the motor 400 that turns off the motor until the jam is cleared.
 The sensors 109, 209 may be located at one or both of the drive cone and clutch plate. They may also be adapted to measure the torque on the driveshaft, or even the torque on the motor, so long as they send a signal to the controller that in turn disables the motor upon slippage.
 In the embodiment shown in FIG. 4, the clutch mechanism is a rotary clutch 200a, it being understood that other clutches could be used, including clutches between the motor and driveshaft 108 and those built into the drive mechanism of the motor.
 In another embodiment of the present invention, the motor is a stepper motor, as is known in the art. Any type of motor may be substituted for the stepper motor. A motor controller is provided, including at least one sensor.
The controller may be provided as an electrical circuit, and may be a circuit including a microprocessor.  When an extension of the feed mechanism encounters a jammed paintball, a signal is sent to the controller that a jam has occurred. The controller sends a signal to the motor to cease turning the drive shaft in the direction it is initially rotating (for example, counterclockwise), and to turn in the opposite direction (i.e., clockwise) for a period of time T. The time T may be set in the controller, or may be user-selectable. Similarly, the controller may be set to turn the motor in the opposite direction for an angular distance D, which may be a portion of a rotation, a full rotation in the opposite direction, or a plurality of rotations. After time T, or distance D, the controller will send a signal back to the motor to rotate the drive shaft back in the original direction (i.e., counterclockwise). In this manner, the jam will be cleared.  The sensor may be provided, for example, as a torsion sensor adapted to measure the torque on the feed mechanism or may be provided as a sensor for detecting the position of the feed mechanism or if the feed mechanism ceases moving. For example, an optical sensor having an emitter and a receiver may be used to detect the movement of the feed mechanism, and may be position within the loader body to detect such position.
 It is thus believed that the operation and construction of the present invention will be apparent from the foregoing description. While the apparatus shown and described has been characterized as being preferred, it will be readily apparent that various changes and modifications could be made therein without departing from the scope of the invention as defined in the following claims.  Having thus described in detail several embodiments of the present invention, it is to be appreciated and will be apparent to those skilled in the art that many physical changes, only a few of which are exemplified in the detailed description of the invention, could be made without altering the inventive concepts and principles embodied therein. It is also to be appreciated that numerous embodiments incorporating only part of the preferred embodiments are possible which do not alter, with respect to those parts, the inventive concepts and principles embodied therein. The present embodiment and optional configurations are therefore to be considered in all respects as exemplary and/or illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all other embodiments and changes to this embodiment which come within the meaning and range of equivalency of said claims are therefore to be embraced therein.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US4766641 *||31 Dec 1985||30 Aug 1988||Whirlpool Corporation||Detent clutch for a vacuum cleaner|
|US5954042 *||10 Nov 1997||21 Sep 1999||Harvey; Daniel D.||Paintball loader|
|US6418919 *||19 Jan 2001||16 Jul 2002||Aldo Perrone||Paintball loader with vibrating mechanism to prevent jamming|
|US6467473 *||8 Jun 2000||22 Oct 2002||Airgun Designs, Inc.||Paintball feeders|
|US6666203 *||2 Jan 2003||23 Dec 2003||Maruzen Company Limited||Air gun magazine and air gun having said magazine|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7832389||11 Oct 2006||16 Nov 2010||Kee Action Sports I Llc||Magnetic drive bypass system for paintball loader|
|US7841328||19 Jul 2007||30 Nov 2010||Procaps Lp||Paintball gun loading methods and apparatus|
|US8047191||18 Mar 2008||1 Nov 2011||Kee Action Sports I Llc||Mechanical drive assist for active feed paintball loader|
|US8061342||29 Feb 2008||22 Nov 2011||Kee Action Sports I Llc||Paintball loader|
|US8091541||26 Jun 2007||10 Jan 2012||Kee Action Sports I Llc||Device for feeding balls into the ball chamber of a handgun|
|US8118016||30 Apr 2010||21 Feb 2012||GI Sportz Inc.||Paintball gun loading methods and apparatus|
|US8251050||11 Jul 2008||28 Aug 2012||Kee Action Sports I Llc||Magnetic drive bypass system for paintball loader|
|US8375929||29 Sep 2008||19 Feb 2013||Kee Action Sports I Llc||Device for storing projectile balls and feeding them into the projectile chamber of a gun|
|US8387607||31 Oct 2011||5 Mar 2013||Kee Action Sports I Llc||Mechanical drive assist for paintball loader|
|US8402959||19 Mar 2009||26 Mar 2013||Kee Action Sports I Llc||Magnetic force feed projectile feeder drive mechanism|
|US8408194||9 Aug 2010||2 Apr 2013||Kee Action Sports I Llc||Procedure and device for feeding balls into the projectile chamber of a handgun|
|US9658027||20 Jun 2014||23 May 2017||Gi Sportz Direct Llc||Compressed gas gun having built-in, internal projectile feed mechanism|
|USRE45490||27 Nov 2012||28 Apr 2015||G.I. Sportz, Inc.||Paintball gun loading methods and apparatus|
|Cooperative Classification||F41B11/57, F41B11/53|
|European Classification||F41B11/57, F41B11/52|
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